Network Lights - Network Lights is a Windows program, which blinks keyboard LEDs (Light Emitting Diode) indicating outgoing and incoming network packets on network interface.
Wireless Network Watcher - scans your wireless network and displays the list of all computers and devices that are currently connected to your network.
FreeMeter - Monitor network bandwidth (C#.NET 2k/XP+). Desktop and Systray graph.
WifiInfoView - Scans wireless networks in your area and displays extensive information, including: SSID, MAC Address, PHY Type (802.11g or 802.11n), RSSI, Signal Quality, Frequency, Channel Number, and more...
TrafficMonitor - TrafficMonitor is a network monitoring suspension window software in Windows.
My WIFI Router - Wifi Hotspot creator for Windows